ever since i put this thumper cam,my brake pedal gets hard sometimes,i almost ran a stop sign yesterday and hit a car,damm pedal was real hard.it goes and comes.is it cause the vacuum and idle??
Time for hydroboost...Originally Posted by chevrolade
you need to go hydraboost due to lack of vacuum.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
That's wierd because mine did the exact opposite after my cam. I got a vacuum gauge and it went from 22-24 at stock to about 12-15 now (at idle). I hardly have brakes because of it. I'll try searching and see what I can find out.
Mike
2000 RCSB
'05 LS2 11.5:1 C.R. l K&N l LT's l Torquer V2 l PAC Springs l Manley 7.4's l 92mm TB l LS7 Lifters l Circle-D 3200 l P&P TB l ARP Rod Bolts l LS1 E-fans l Nelson 93 Tune l Brand-X 100 Shot l Walbro 255 l Duals w/ X and Magnapacks l Vette Servo l Transgo S.K. l 30K Cooler l Detroit Tru-Trac l Motive 4.30's l ARP Cap Studs l TA Girdle
The vacuum is what makes your pedal feel softer, it assist's in pushing the master cylinder in when you press the pedal. If there isn't enough vacuum to assist then the pedal feels hard and is alot harder to press due to the booster not helping out...it's like having manual brakes.
no way i dont want to switch to hydroboost ,i rather switch the cam lol
IMO hydroboost is way better than a booster. Especially if you have upgraded heavier wheels and tires than stock. And hydroboost is cheap and easy to install.
if i were to do hydrooost,cause i mite if i wanted to bag it,but i would need all the components from a 2500 right??
Yep..all you need is the unit, two lines, and a tee to tie in the return...super easy...
use everything from a 3/4 ton but get thebooster from an escalade it will have the studs in the right place. the hds have one in a an odd place so extra work. im in the process of acquiring parts to convert mine because i have no vacuum in my truck at low idle
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